+ 添加utils目录
+ 添加lighttpd相关配置文件
* fix w3c validator errors
+ admin.html: 显示blog状态, 并隐藏edit按钮
+ index.html: 点击blog摘要时, 跳转到对应的blog
+ index.html: 提示用户摘要区为可点击区域
+ blog.html: 添加Disqus评论插件
* 使用head block代替body内嵌CSS
+ blog.html: 在标题旁添加评论的链接
+ 添加settings templatetags
+ setting: 添加get_setting templatetag
+ base.html: 添加Google Analytics
+ 添加setting
* setting: fix options can't be got
base.html: use settings instead hardcode info
* setting: change 'setting' to 'settings'
* use class decorator to check admin permission
Merge from dev branch @2013.03.05